Rack construction for dishwashing machine



0, 1966 R. c. GEiGER ETAL 3,269,548

RACK CONSTRUCTION FOR DISHWASHING MACHINE Filed Nov. 20} 1964 2Sheets-Sheet 1 M III INVENTORS RUSSELL C. GEIGER 8: BY PAUL B. GEIGERATTORNEYS Aug. 30, 1966 R. c. GEIGER ETAL RACK CONSTRUCTION FORDISHWASHING MACHINE Filed NOV. 20, 1964 FIG -5 2 $heets-Sheet 2INVENTORS RUSSELL C. GEIGER 8 PAUL B. GEIGER FIG-6 ATTOR NEYS 3,269,548Ice Patented August 30, 1966 3,269,548 RACK CQNSTRUCTIGN FOR DISHWASHINGMACHINE Russell C. Geiger, Troy, and Paul B. Geiger, Piqua, Ohio,

assignors to The Hobart Manufacturing Company,

Troy, Ohio, a corporation of Ohio Filed Nov. 20, 1964, Ser. No. 412,7218 Claims. (Cl. 21141) This invention relates to an improved rack systemfor domestic dishwashing machines, and more particularly, to a racksystem which is adapted to accommodate flexibly a large number oftableware articles for obtaining the maximum capacity and which is alsoadapted to accommodate large articles such as deep bowls and pots andpans as well as tall glasses and the like.

Manufacturers of domestic dishwashers are confronted with the dilemma ofhow to construct a rack system for a household dishwasher which canaccommodate a substantially large number of place settings of tablewarearticles and also can accommodate large serving and mixing bowls, potsand pans, roasters, serving platters, tall bottles, and glasses andother similar large articles. This situation is further aggravated bythe fact that each of the above articles is manufactured in hundreds ofdifferent sizes and configurations. The ideal rack system, of course, isone which can receive any size or shape of the different articles andposition each of them in relation to the cleansing spray system so thatthe article receives the optimum washing, rinsing and drying action.

In a front loading dishwasher a two level rack system is most commonlyemployed for the purpose of holding the maximum number of articles. Itis desirable, however, to have the lower rack positioned at the highestpossible elevation in relation to the floor to minimize the extent ofbending over by the person loading and unloading the machine. On theother hand, in view of the overall standardized dimensions of thedishwasher cabinet, the higher the lower rack is positioned from thefloor, the smaller the space in which the articles must be accommodated.Thus, usually a compromising elevation for both the upper and lower rackis selected in order that the dishwashing machine will accommodate alarge majority of the articles of varied sizes. In compromising,however, there results an inability of the rack system to accommodaterelatively large articles such as those mentioned above. The presentinvention is directed to a rack system for a dishwashing machine whichis adapted to accommodate and properly to position a much wider varietyof articles, including either a large number of single tablewarearticles or a number of large articles, or a mixed load having acombination of these different articles, according to the requirementsof the operator.

Accordingly, one primary object to the present invention is to providefor a dishwashing machine a novel rack system which is adapted toaccommodate a large variety of tableware and food preparing articles tobe cleansed, including a large number of articles such as plates,dishes, cups and saucers, and/ or a number of large articles such asdeep serving bowls, pots and pans, and tall glasses and to position eachof the articles for optimum washing, rinsing and drying action.

As another object, the present invention provides a novel upper racksystem for a front loading type dishwashing machine wherein the rack isconnected to the cleansing chamber by a movable track system spacedbetween each side of the rack and the inside walls defining the chamberand operating so that the rack is completely carried out of the workchamber for easy loading and unloading of the articles, and wherein therack is adapted to be removably attached to the track at differentlevels, thus permitting the rack to be positioned at differentelevations within the chamber for accommodating a wide variety oftableware and food preparing articles in both the upper and lower racks.

Another object of the present invention is to provide a rack system fora dishwashing machine as outlined above wherein the rack includes aseries of generally upright pins defining pockets for receiving amaximum capacity of tableware articles such as plates, dishes, cups andsaucers and wherein the pins are collapsible against the bottom of therack making the rack adaptable for receiving large articles, such asserving and mixing bowls, tall glasses and the like, and to positionthem for optimum washing and rinsing action as well as drying.

A further object of the present invention is to provide a rack system asoutlined above wherein the feature of collapsible pins is adapted to becombined with the feature of attaching the rack to the movable tracks atdifferent levels in order for the rack to accommodate a large variety oftableware and food preparing articles.

As another object, the present invention provides a novel rack system asoutlined above wherein the collapsible pins are generally dog-leg inconfiguration and are adapted to be retained in an upright position by adetent mechanism which is simple in construction and easy to operate forcollapsing the pins.

Other objects and advantages of the invention will be apparent from thefollowing description, the accompanying drawings and the appendedclaims.

In the drawings FIG. 1 is a side elevational View of a front loadingtype dishwashing machine which is partially cut away to show the generalposition of a rack system according to the invention;

FIG. 2 is a front elevational view of the dishwashing machine in FIG. 1and with a portion of the door cut away to show the position of articlesplaced within the upper and lower racks;

FIG. 3 is a fragmentary perspective view of a loaded upper rack formedaccording to the invention;

FIG. 4 is a fragmentary perspective view of an unloadlfd upper rackincluding the movable rack supporting rac s;

FIG. 5 is a top plan view of the upper rack system as shown in FIGS.1-4;

FIG. 6 is a front elevational view of the upper rack shown in FIG. 5;

FIG. 7 is a side elevational view of the right hand movable racksupporting tracks as shown in the top view of FIG. 5;

FIG. 8 is a fragmentary section view on an enlarged scale of the upperrack and movable tracks as viewed along the line 88 of FIG. 5 andshowing the adjustable feature of mounting the rack on the track forproviding difierent elevations of the rack within the dishwashingmachine; and I FIG. 9 is an elevational section view of the movable racktracks as viewed along the line 99 of FIG. 5.

Referring to the drawings which illustrate a preferred embodiment of thepresent invention, FIG. 1 shows the general arrangement of a frontloading type diswashing machine or automatic dishwasher which includesan improved rack system according to the invention. The dishwasherincludes a cabinet, indicated generally by the reference member 10,having a base 12 and enclosing a tank 13 which defines a cleansingchamber 15. Access to the chamber 15 is provided by a door 17 hinged atthe front of the machine about an axis 18 to swing downwardly to ahorizontal position as indicated by the dotted lines. A top 19 ismounted on the cabinet 10 to provide a dishwashing machine of the freestanding type. Frequently however, the cabinet 10 and top 19 are notused 3 when it is desired to install the machine within a kitchen undera built-in countertop.

Within the chamber 15, a suitable cleansing spray system (not shown) isprovided and normally functions to recirculate a quantity of cleansingliquid supplied to the chamber 15, in a manner well known in the art.Details of this system, such as the pump, drive motor, timer controls,and plumbing connections have all been omitted since they may takevarious forms well known in the art, and since they form no particularpart of the present invention. Details of suitable such apparatus areshown and described in United States Patents Nos. 2,681,658 and2,862,510, both issued to the assignee of this application.

As mentioned above, the exterior cabinet dimensions of domesticdishwashing machines of the front loading type are generallystandardized and thus, the cabinet occupies a perdetermined space. Thesestandard dimensions, which enable the dishwashing machine to beinstalled under a built-in counter, include a width of about 24 inches,a depth (front to back) of about inches, and an overall height, notincluding the top 19 of about 34 inches. Within this predeterminedspace, however, it is highly desirable to provide a dishwasher whichwill hold a large capacity of tableware and food preparing articles in aposition which provides the most effective washing and rinsing of thearticles. To accomplish this capacity, a front loading type dishwasheris commonly provided with a lower rack 22 which is adapted to roll outover the open door 17 when it is in its open position for the convenientloading and unloading of the tableware articles, such as the illustratedlarge dinner plate 23. The present invention relates to the upper racksystem 25 which includes generally a rack 27 which is supported by amovable track system 29 and 30 spaced on the sides of the rack 27 andmounted on the side walls of the tank 13. The track systems 29 and 30are adapted to move horizontally so that the upper rack 27 may be pulledcompletely out of the chamber 15 (FIG. 1) and the entire upper rack 27may be conveniently loaded and unloaded.

As shown in FIG. 2, the upper rack system according to the invention isadapted to receive large articles, as illustrated by the mixing bowl 33and the jar 34. Both of these articles are positioned on a tilt with theopen portion facing downwardly to allow the cleansing liquid to enterthe inside portion of the articles and to provide for good draining ofthe articles. When desired, however, the rack system 25 will alsoaccommodate a large number of similar articles, as shown in FIG. 3, andillustrated exemplary by the plates 36, cups 37 and glasses 39.

As shown in the partial view of FIG. 4, the rack 27 includes an openmesh bottom 40 having an elevated control portion 41 for providingclearance for articles in the lower rack 22, and a surrounding frame 42which are defined by a series of parallel spaced elongated U-shapedlongitudinal members 45, 46 and 47 extending from front to back andconnected to a series of parallel spaced generally U-shaped lateralmembers 48. The leg portions of the longitudinal members 46 and 47 areformed upwardly and are connected to the top frame member 49 extendingacross each end of the rack 27 to define the front and rear end of therack frame 42. The leg portions of the lateral members 48 are formedupwardly and are connected to the longitudinal support members 52 and 54(FIG. 6) to define the sides of the rack frame 42. The forward legportion of each of the longitudinal members are shown extending upwardlyin FIGS. 4 and 6 where the top ends of the members are releasably lockedin corresponding sockets 58 formed within a fiat spring detent member60. The ends of the spring members 60 are secured to the rack byattachment to the upwardly extending leg portions of the two outermostlongitudinal members 46.

Mounted in a predetermined spaced relationship along the longitudinalmembers 45 and 47 are a series of generally dog-leg shaped pins 65 and66, respectively, which are adapted to receive a number of similararticles such as the plates 36 or cups 37 shown in FIG. 3. It has beendetermined that the successive mounting of the dog-leg configuration ofthe pins provides the maximum versatility for receiving a wide varietyof articles and to position the articles for an optimum washing, rinsingand drying action.

As shown in FIGS. 5 and 6, the pair of longitudinal members 45 spaced oneach side of the rack 27 are adapted to rotate within the hinge clips 67mounted on the lateral members 48. Thus, by releasing the upwardlyextending end portion of the members 45 from the sockets 58 within thedetent member 60, the longitudinal members 45 can be rotated whereby thedog-leg shaped pins 65 may be collapsed against the bottom of the rack,as shown by the left side of the rack 27 in FIGS. 5 and 6, and therebyprevent the pins 65 from blocking the space required for large articles,such as the bowl 33 and jar 34 shown in FIG. 2. Since the rack issymmetrical about its center line and there are two sets of rotatablymounted longitudinal members 45, it can be seen that it is not necessaryto collapse all of the pins 65. Instead, only one or two rows can becollapsed depending upon the particular number and size of articleswhich are to be loaded. It has been determined, however, that byrotatably mounting only the longitudinal members 45, the rack willaccommodate practically all sizes and shapes of bowls, pots and pans andother relatively large articles. For this reason, the longitudinalmembers 47 are connected rigidly to the lateral members 48 and the pins66 can not be collapsed. It is to be understood, however, that the twolongitudinal members 47 and attached pins 66 could be rotatably mountedin the same manner as the members 45, in which case, all of theprojecting pins 65 could be collapsed against the bottom of the rack, ifdesired.

The left and right track system, generally referred to as 29 and 30respectively, are preferably formed from stainless steel sheet materialand include a right and left hand outer track 70 and 71, respectively,which are telescopically mounted over corresponding inner tracks 73 and74. These tracks are formed in an inverse manner to define a right andleft hand track system. Typically shown in FIGS. 7 and 8, the right handouter track 70 includes a pair of tabs 77 lanced out of the track andextend outwardly to engage one of the three longitudinally extendingsupport members 54 which are vertically spaced apart to enable the rackto be supported at three different elevations within the chamber 15.Preferably, the longitudinally extending support members 54 have anoutwardly formed portion 79 (FIG. 4) spaced between two adjacent lateralmembers 48 to reduce the extent which the tabs 77 project inwardly intothe rack 27 and also to prevent end-wise shifting of the rack inrelation to the outer track 70.

As FIG. 8 shows, the end portion 82 of each tab 77 extends upwardlyaround the portion 79 to define a slight detent to provide for a snapengagement between the rack and the outer track 70. To change the rack27 to a different level or elevation within the dishwashing machine,each side of the rack is lifted separately so that one of the members 54disengages from the set of tabs 77 and another longitudinal member 54 ishooked over the tabs 77. In this manner, the rack can be quickly andeasily positioned at different levels within the chamber 15 according tothe size and configuration of the tableware and food preparing articles.

The outer track 70, and likewise the left outer track 71, is formedhaving a general channel configuration with the top portion 86 having aninverted V-shape to receive a correspondingly shaped support roller 88rotatably mounted on the forward end of the inner track 73. The bottomportion 90 of the outer track 70 slopes downwardly to provide for gooddrainage of the cleansing liquid from the inside of the track in thesame manner as the V-shaped configuration provides for good drainagefrom the top portion 86 of the track 70. This effective drainage ishighly desirable to prevent small food particles from collecting ordepositing on the track 70 after an extended period of use of themachine.

As shown in FIGS. 7 and 9, the rear end portion 92 of the outer track 70has a right angle channel shaped configuration which is similar butslightly larger than the configuration of the inner track 73. To providefor smooth movement of the outer track 70 in a telescopic manner overthe inner track 73, a suitable plastic button 94 is spaced on top andbottom between the inner surface of the end portion 92 and the outersurface of the inner track 73. Preferably the button 94 is formed from asuitable plastic material having a low coefficient of friction toprovide the smooth movement of the outer track 70 along the inner track73.

To enable the upper rack 27 to be moved completely out of the chamber15, as shown in FIG. 1, for easy loading and unloading, each of theinner tracks 73 and 74 is mounted to a side wall of the tank 13 by apair of rollers 97 having an outside diameter substantially equal to thevertical distance between the opposite inside surfaces of the innertrack 73 (FIG. 9). This arrangement permits the inner tracks 73 and 74to move horizontally on the tank 13 as the rack is pulled outwardlyuntil the resilient bumpers 99 mounted on the end of the inner tracks 73and 74 engage the roller 97 mounted near the rear of the tank 13.

In operation, when the upper rack 27 is moved outwardly over the opendoor 17, the rack carries with it the outer tracks 70 and 71 as a resultof the engagement between the tabs 77 and the longitudinal members 54.The outer tracks, in turn, carry with them the inner tracks 73 and 74 asa result of the frictional drag between the buttons 94 and the innertracks. When the resilient bumpers 99 engage the rollers 97, the innertracks stop and the outer tracks move along the inner tracks as a resultof the rollers 88 and the sliding engagement between the buttons 94 andthe inner tracks 73 and 74.

A forward stop is provided by the tabs 102 extending from the outertracks and which are adapted to engage the tabs 104 extending downwardlyfrom the forward end of the inner tracks 73 and 74. When the rack ispushed backwardly into the chamber 15 after loading, the first movementof the rack causes the inner tracks 73 and 74 to move rearwardly untilthe resilient bumpers 99 engage the rear Wall of the tank 13. The outertracks 70 and 71 then continue to move rearwardly by telescoping overthe inner tracks until the rack is positioned completely within thecleansing chamber 15.

It can be seen that the improved rack system constructed in accordancewith the present invention has several desirable features whichcooperate to provide a dishwashing machine which can accommodate agreater variety of articles. Specifically, the series of spaced apartdog-leg shaped pins serves to accommodate a large number of tablewarearticles and thereby provides for a maximum capacity load. However, whenit is desirable to accommodate a mixed load of a number of similartableware articles and large serving bowls, pots and pans and the like,one or more rows of pins 65 may be collapsed against the bottom portionof the rack so that the pins do not interfere with the accommodation andproper positioning of the large articles. Furthermore, whenexceptionally large articles are placed either within the upper rack orthe lower rack, the upper rack may be easily adjusted verticallydepending upon the space required to accommodate the large articles.This feature is provided by the plurality of longitudinal members 54which are spaced apart vertically and can be engaged by the tabs 77according to the desired elevation of the rack within the machine.

The construction of the rack system also permits the upper rack to bemoved completely out of the cleansing chamber 15 for convenient loadingand unloading of the upper rack. This feature is provided by mountingthe inner tracks 73 and 74 so that the inner tr-acks may movehorizontally several inches in relation to the side Walls of the tank13.

While the form of apparatus herein described constitute a preferredembodiment of the invention, it is to be understood that the inventionis not limited to this precise form of apparatus, and that changes maybe made therein without departing from the scope of the invention whichis defined in the appended claims.

What is claimed is:

1. An improved upper rack system for a dishwashing machine having a tankdefining a cleansing chamber and adapted to accommodate a large capacityof tableware articles as well as large articles such as deep bowls, potsand pans and tall glasses, said rack system comprising a rack having anopen mesh bottom and frame through which a cleansing spray can pass,said rack including a series of generally parallel spaced longitudinalmembers extending from front to back and having connected thereto aseries of generally parallel spaced lateral members extending acrosssaid longitudinal members, a means connected to a plurality of saidmembers to define a support for the tableware articles, a track spacedbetween each side of said frame and side walls of a tank, means adaptedto mount said tracks to the side walls of a tank at a predeterminedelevation providing for horizontal movement into and out of the chamber,and means on said tracks for supporting said frame at differentelevations for accommodating the large articles.

2. An improved upper rack system for a dishWash-ing machine having atank defining a cleansing chamber and adapted to accommodate a largecapacity of tableware articles as Well as large articles such -as deepbowls, pots and pans and tall glasses, said rack system comprising arack having an open mesh bottom and frame through which a cleansingspray can pass, said rack being formed by a series of generally parallelspaced longitudinal members extending from front to back and a series ofgenerally parallel spaced lateral members extending across saidlongitudinal members and connected thereto, a plurality of spaced apartupright pins fastened to a plurality of said members to define a seriesof successive pockets for receiving and supporting the tablewarearticles in a predetermined spaced relationship, a track spaced betweeneach side of said frame and side walls of a tank and having a pluralityof tabs extending therefrom, means adapted to mount said tracks to theside walls of a tank for horizontal movement of the tracks to carry therack into and out of the chamber, and means on each side of said framefor engaging at different elevations said tabs extending from saidtracks to position said rack at the optimum level for accommodating thelarge articles.

3. An improved upper rack system for a dishwashing machine having a tankdefining a cleansing chamber and adapted to accommodate a large capacityof tableware articles as well as large articles such as deep bowls, potsand pans and tall glasses, said rack system comprising a rack having anopen mesh bottom and frame through which a cleansing spray can pass,said rack being formed by a series of generally parallel spacedlongitudinal members extending from front to back and a series ofgenerally parallel spaced lateral members extending across and connectedto said longitudinal members, means connected to a pluarlity of saidmembers to define a support for the tableware articles, an outer trackspaced between each side of said frame and side walls of a tank, aninner track mounted for relative telescopic movement within each of saidouter tracks, means adapted to mount each of said inner tracks to a tankfor horizontal movement to enable said rack to be moved completely outof the chamher for convenient loading and unloading, and means on saidtracks for receiving said frame at different elevations to :positionsaid rack for accommodating the large articles.

4. An improved upper rack system for a dishwashing machine having a tankdefining a cleansing chamber and adapted to accommodate a large capacityof tableware articles as well as large articles such as deep bowls, potsand pans and tall glasses, said rack system comprising a rack having anopen mesh bottom and frame through which a cleansing spray can pass,said rack being formed by a series of generally parallel spacedlongitudinal members extending from front to back and a series ofgenerally parallel spaced lateral members extending across and connectedto said longitudinal members, spaced apart upright pins fastened to aplurality of said members to define a series of successive pockets forreceiving and suppolting tableware articles in a predetermined spacedrelationship, means for rotatably mounting at least one of said membershaving pins thereon to collapse said pins against the bottom of saidrack for accommodating the large articles, means for releasably lockingsaid rotatably mounted member with said pins in a generally uprightposition for defining said pockets, a track spaced between each side ofsaid frame and side walls of a tank, means adopted to mount said tracksto a tank for horizontal movement, and means on each side of said framefor engaging at different elevations the movable tracks to position saidrack at the optimum level for the large articles.

5. An improved rack system for a dishwashing machine having a tankdefining a cleansing chamber and adapted to accommodate a large capacityof tableware articles as well as large articles such as deep bowls, potsand pans and tall glasses, said rack system comprising a rack having anopen mesh bottom and frame through which a cleansing spray can pass,said rack being formed by a series of generally parallel spacedlongitudinal members extending from front to back and a series ofgenerally parallel spaced lateral members extending across and connectedto certain of said longitudinal members, spaced apart upright pinsfastened to a plurality of certain of said parallel members to define aseries of successive pockets for receiving and supporting the tablewarearticles in a predetermined spaced relationship, means for rotatablymounting at least one of said parallel members having pins thereon tocollapse said pins against said bottom for accommodating the largearticles, and means for holding said rotatably mounted member with saidpins in a generally upright position for defining said pockets.

6. An improved upper rack system for a dishwashing machine having a tankdefining a cleaning chamber and adapted to accommodate a large capacityof tableware articles as well as large articles such as deep bowls, potsand pans and tall glasses, said rack system comprising a rack having anopen mesh bottom and frame through which a cleansing spray can pass,said rack being formed by a series of generally parallel spacedlongitudinal members extending from front to back and a series ofgenerally parallel spaced lateral members extending across and connectedto certain of said longitudinal members, a plurality of spaced apartgenerally dog-leg shaped pins fastened to at least three pairs of saidlongitudinal members to define a series of successive pockets forreceiving and supporting the tableware articles in a predeterminedlongitudinal spaced relationship, means for rotatably mounting at leastone pair of said longitudinal members having pins thereon to collapsesaid pins against the bottom for accommodating the large articles, meansfor releasably locking the end portion of said rotatably mountedlongitudinal members with said pins in a generally upright position fordefining said pockets, and means including a series of vertically spacedmembers on each side of said frame for mounting said rack at differentelevations within said chamber.

7. An improved upper rack system for a dishwashing machine having a tankdefining a cleansing chamber and adapted to accommodate a large capacityof tableware articles as well as large articles such as deep bowls, potsand pans and tall glasses, said rack system comprising a rack having anopen mesh bottom and frame through which a cleansing spray can pass andbeing formed by a series of generally parallel spaced longitudinalmembers extending from front to back and a series of generally parallelspaced lateral members extending across and connected to certain of saidlongitudinal members, a plurality of spaced apart upright pins fastenedto at least two of said members to define a series of successive pocketsfor receiving and supporting the tableware articles in a predeterminedspaced relationship, means for rotatably mounting at least two of saidmembers having pins thereon to collapse said pins against the bottom foraccommodating the large articles, means for releasably locking saidrotatably mounted member with said pins in a generally upright positionfor defining said pockets, a track spaced between each side of saidframe and side walls of a tank and having tabs extending therefrom,means adapted to mount said tracks to a tank for horizontal movement,and means on each side of said frame for engaging at differentelevations said tabs extending from said tracks to position said rack atthe optimum level for the large articles.

8. An improved upper rack system for a dishwashing machine having a tankdefining a cleansing chamber and adapted to accommodate a large capacityof tableware articles as well as large articles such as deep bowls, potsand pans and tall glasses, said rack system comprising a rack having anopen mesh bottom and frame through which a cleansing spray can pass,said rack being formed by a series of generally parallel spacedlongitudinal members extending from front to back and a series ofgenerally parallel spaced lateral members extending across and connectedto certain of said longitudinal members, a plurality of spaced apartgenerally dog-leg shaped pins fastened to at least three pair of saidlongitudinal members to define a series of successive pockets forreceiving and supporting the tableware articles in a predeterminedlongitudinal spaced relationship, means for rotatably mounting at leastone pair of said lonm'tudinal members having pins thereon to collapsesaid pins against the bottom for accommodating the large articles,spring detent means for releasably locking the end portion of saidrotatably mounted longitudinal members with said pins in a generallyupright position for defining said pockets, a series of verticallyspaced longitudinal members connected to each side of said frame, anouter track spaced between each side of said frame and side walls of atank and having tabs extending therefrom for engaging said verticallyspaced members to position said rack at different elevations within achamber, an inner track mounted for relative telescopic movement withineach of said outer tracks, and roller means adapted to mount each ofsaid inner tracks to a tank for horizontal movement to enable said rackto be moved completely out of the chamber for convenient loading andunloading.

References Cited by the Examiner UNITED STATES PATENTS 2,644,588 7/1953Brown l08l02 2,648,588 8/1953 Ruspino 312308 2,841,288 7/1958 Field etal 211-41 3,126,098 3/1964 Geiger et al 211-41 3,194,610 7/1965 Stewart3083.8

CLAUDE A. LE ROY, Primary Examiner.

W. D. LOULAN, Assistant Examiner.

1. AN IMPROVED UPPER RACK SYSTEM FOR A DISHWASHING MACHINE HAVING A TANKDEFINING A CLEANING CHAMBER AND ADAPTED TO ACCOMMODATE A LARGE CAPACITYOF TABLEWARE ARTICLES AS WELL AS LARGE ARTICLES SUCH AS DEEP BOWLS, POTSAND PANS AND TALL GLASSES, SAID RACK SYSTEM COMPRISING A RACK HAVING ANOPEN MESH BOTTOM AND FRAME THROUGH WHICH A CLEANSING SPRAY CAN PASS,SAID RACK INCLUDING A SERIES OF GENERALLY PARALLEL SPACED LONGITUDINALMEMBERS EXTENDING FROM FRONT TO BACK AND HAVING CONNECTED THERETO ASERIES OF GENERALLY PARALLEL SPACED LATERAL MEMBERS EXTENDING ACROSSSAID LONGITUDINAL MEMBERS, A MEANS CONNECTED TO A PLURALITY OF SAIDMEMBERS TO DEFINE A SUPPORT FOR THE TABLEWARE ARTICLES, A TRACK SPACEDBETWEEN EACH SIDE OF SAID FRAME AND SIDE WALLS OF A TANK, MEANS ADAPTEDTO MOUNT SAID TRACKS TO THE SIDE WALLS OF A TANK AT A PREDETERMINEDELEVATION PROVIDING FOR HORIZONTAL MOVEMENT INTO AND OUT OF THE CHAMBER,AND MEANS ON SAID TRACKS FOR SUPPORTING SAID FRAME AT DIFFERENTELEVATIONS FOR ACCOMMODATING THE LARGE ARTICLES.